From the author of

From the author of

Creating a New Atlas Project

To create a new Atlas project, start Visual Studio and choose File > New
Web Site from the menu. In the New Web Site dialog box (see Figure 1), choose
"Atlas" Web Site in the My Templates section of the Templates list.
Make sure that Language is set to Visual C#. Browse to the location where you
want to save the project, name the project, and click OK.

When you use the Atlas web site template, the runtime assembly is installed
into the Bin folder of the project automatically, with the name
Microsoft.Web.Atlas.dll. If you wanted to create a new web site that
didn’t use this template, you would need to add this reference by locating
the file on your computer, which is currently installed by default in the
following location:

C:\Program Files\Microsoft ASP.NET\Atlas\v2.0.50727\Atlas

The Web.config file for the project is also preconfigured
automatically with the settings that are required to run the Atlas framework. If
you want to add Atlas to an existing application, simply add the reference to
the .dll, copy the appropriate setting to the Web.config file,
and you’re ready to go.